MCQ Collection

MDCAT 2026 MCQs

Practice MDCAT 2026 questions with answers and explanations.

A forward-biased p-n junction diode has what effect on its depletion region?

Choose an option to check your answer.

What is the main function of a diode in rectification?

Choose an option to check your answer.

A half-wave rectifier uses what part of an AC cycle?

Choose an option to check your answer.

What produces a line spectrum in an atom?

Choose an option to check your answer.

When an electron drops to a lower atomic level, what is emitted?

Choose an option to check your answer.